电容去离子
碳化
阴极
材料科学
杂原子
吸附
化学工程
碳纤维
生物炭
电解质
活性炭
海水淡化
纳米技术
电化学
超级电容器
比表面积
热解
电极
复合材料
化学
有机化学
催化作用
物理化学
工程类
复合数
生物化学
戒指(化学)
膜
作者
Bei Li,Xiaojing Liu,Ao Wang,Chang Tan,Kang Sun,Libo Deng,Mengmeng Fan,Jian Cui,Jianhui Xue,Jianchun Jiang,Dongrui Yao
出处
期刊:Desalination
[Elsevier]
日期:2022-10-01
卷期号:539: 115955-115955
被引量:4
标识
DOI:10.1016/j.desal.2022.115955
摘要
The conversion of biowaste into valuable carbon-based materials is beneficial for developing a sustainable energy economy. In this study, activated carbons (ACs) are successfully synthesized via one-step carbonization using Enteromorpha prolifera (EP) as the precursor, which is a kind of ocean biowaste causing green tides. Owing to EP's ordered anatomic texture and naturally embedded alkalis, the produced EP-derived ACs (EPACs) exhibit hierarchical porous structure without any support from active agents. Plentiful heteroatoms are also formed on surface of EPACs, endowing the carbon with good hydrophilicity and unique electronegativity. Consequently, the salt adsorption capacity and the charge efficiency of the capacitive deionization (CDI) system are improved by 12.1 % and 11.95 % respectively by replacing the commercial-AC cathode with the EPAC-800 cathode (pyrolyzed at 800 °C). The potential distribution test and the modified Donnan model simulation suggest that the hierarchical pore volume of EPAC-800 offers great desalination capacity, while its surface electronegativity optimizes the potential distribution of the two electrodes. The new knowledge gained from this work will hopefully not only establish a scalable method to utilize the EP waste, but also guide the design and manufacture of high-performance electrodes for CDI technology.
科研通智能强力驱动
Strongly Powered by AbleSci AI